As you would know, GlassFish integrates the reference implementation
of the CDI specification, Weld,
to support CDI. GlassFish 3.1 integrates the latest release of Weld,
Weld
1.1.0. Weld 1.1.0 was released a month ago and its main focus was
on
making "significant improvements in memory usage, boot-time and runtime
performance" compared to the earlier release. More details on the
release may be found here.